ASSANOVA, A. T.; TLEULESSOVA, A. B. Nonlocal problem for а system of partial differential equations of higher order with pulsed actions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 71, n. 12, p. 1587–1606, 2019. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/712. Acesso em: 7 apr. 2025.